电子屏蔽之谜与核团簇
The electron screening puzzle and nuclear clustering
摘要：
对伽莫夫峰内或附近天体物理学感兴趣的核反应的精确测量显示，靶中存在原子电子会产生意想不到的效应。实验需要包括一个有效的“屏蔽”潜力，以解释在最低的可测量能量的截面的增强。尽管在过去的20年里进行了各种理论研究和大量的实验测量，但尚未发现一种理论可以解释数据所需的极高屏蔽电位值的原因。在这封信中，我们表明，而不是一个原子物理学解决方案的“电子屏蔽之谜”，大屏蔽电位值的原因，实际上是由于在核反应，特别是涉及轻核反应的集群效应。
英文摘要：
Accurate measurements of nuclear reactions of astrophysical interest within, or close to, the Gamow peak, show evidence of an unexpected effect attributed to the presence of atomic electrons in the target. The experiments need to include an effective "screening" potential to explain the enhancement of the cross sections at the lowest measurable energies. Despite various theoretical studies conducted over the past 20 years and numerous experimental measurements, a theory has not yet been found that can explain the cause of the exceedingly high values of the screening potential needed to explain the data. In this letter we show that instead of an atomic physics solution of the "electron screening puzzle", the reason for the large screening potential values is in fact due to clusterization effects in nuclear reactions, in particular for reaction involving light nuclei.
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